New Zealand financial markets largely shrugged off the 7.1 magnitude
earthquake hit Christchurch, its second-biggest city, and left the country
facing a clean-up bill of around NZ$2bn (£910m).

While the New Zealand dollar eased slightly and government debt fell on fears of increased bond issuance, stocks were higher as the estimated damage bill was seen relatively light and could not derail a rally fuelled from overseas markets.

The benchmark NZX 50 index rose 1.15pc to close at 3143.14 on Monday as investors view the long-term economic impact of the massive quake as limited.

Shares of the country's largest listed company, construction and building materials firm Fletcher Building jumped more than 5pc.

Steel & Tube, which produces and distributes steel in the country including nuts, bolts and screws, rose 7.7pc, while Tower, a provider of risk insurance and wealth management services, fell 3pc.

Many businesses in the South Island city of Christchurch remain closed as a state of emergency was extended until Wednesday after the country's most damaging earthquake in 80 years tore up roads, smashed water and sewer pipes, and severely damaged many buildings.

Economists predicted the quake could eat into New Zealand's economic growth this year and keep interest rates on hold until there is more clarity on the impact.

"Overall there will be a negative impact on economic activity, with Christchurch accounting for about 15pc of GDP," ANZ-National Bank senior economist Khoon Goh said, adding the exact impact cannot yet be quantified.

"It also means the Reserve Bank of New Zealand will most likely be on hold in September," he said.

Some predicted the quake - which claimed no lives and resulted in only two serious injuries - could add to growth in 2011 as rebuilding efforts ramp up.

"We've got to move to the rebuilding and refocusing stages, how we get Christchurch up and running again," Prime Minister John Key told Television New Zealand.

The government's state-disaster fund, the Earthquake Commission, is expected to be able to cover the cost of repairing the damage.

The epicentre of the quake was 20 kilometres (12 miles) to the west of Christchurch, a city of 350,000 which supports the agricultural-based economy of New Zealand's South Island.

The Christchurch City Council estimated about 500 buildings have been damaged, with hundreds of people spending the first two nights in emergency shelters.

The quake was among the 10 strongest recorded in New Zealand, which sits between the Pacific and Indo-Australian tectonic plates, and records around 14,000 earthquakes a year, of which around 20 top magnitude 5.0.

It is the most damaging quake in New Zealand since the North Island city of Napier was devastated in 1931.

The last fatal quake was in 1968 when an earthquake measuring 7.1 killed three people on the South Island's West Coast.